JP2002339400A - Tank fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin tank fixing structure which implements complete fixture of the tank, reduces production of noises and formation of scratches, and allows efficient assembly thereof. SOLUTION: According to the resin tank fixing structure to be mounted in a vehicle such as construction equipment, a resin tank has a flange portion having a fixing hole therein. On the other hand, a revolving frame of the construction equipment or the like has a fixture support portion. Then, the flange portion is bolted to the fixture support portion, to thereby fix the resin tank to the revolving frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a resin tank mounted on a vehicle such as a construction machine.

[0002]

2. Description of the Related Art Recently, resin tanks have been adopted as tanks mounted on construction machines and the like. This is because a resin tank has a low manufacturing cost and can be easily manufactured even with a tank having a complicated shape. However, since the resin tank has a small friction coefficient and is slippery, the conventional fastening band has a problem that the band slips off. For this reason, various ideas have been devised.

For example, FIG. 6 shows an example of a conventional fixing method (hereinafter, referred to as a conventional device 1). FIG. 6A is a plan view, and FIG. 6B is a side view. In these figures, a resin tank 50 has a fixed support portion 52 (for example, a bracket or the like) fixed to the surface of a revolving frame (or revolving frame frame) 51 by bolting or welding. A fixed mounting portion 53a and an adjusting portion 53b are provided at both ends of the fixed support portion 52.
The resin tank 50 is fixed to the frame floor 51 by adjusting the length and the tension. In the conventional device 1, the resin tank 50 is pressed against the frame floor 51 by the fastening force of the belt 53, and is fixed vertically. The lateral movement is fixed by the frictional force.

FIG. 7 shows another conventional apparatus.
7 shows a tank fixing structure described in No. 7. Hereinafter, it is referred to as a conventional device 2. In this drawing, a fixed block 61 is fixed to the surface of the revolving frame 51 by welding or the like, and a tank fixing member 62 is fixed to the fixed block 61 by bolting. On the other hand, the resin tank (fuel tank) 60 is provided with a recess 63 that fits the fixing member 62 in the vertical direction and a groove 64 that fits the belt 65 in the circumferential direction. The resin tank 60 is fastened to the belt 65 together with the fixing member 62, and is fixed to the fixing member 62. In the conventional device 2, the resin tank 60 is attached to the fixing member 62 by the belt 65.
Is fixed in the horizontal direction. The vertical direction is fixed by frictional force.

FIG. 8 shows a tank fixing structure described in Japanese Patent Application Laid-Open No. 9-272347. Hereinafter, it is referred to as a conventional device 3. The conventional device 3 has a fixed structure in which a fixed object 72 fixed to the revolving frame 51 is used as a fixed support. That is, the flat surface of the resin tank 70 is fixed to the fixed object 72 with the belt 73 back to back. Further, the resin tank 70 is provided with a groove 74 to be fitted to a belt 73 similarly to the conventional apparatus 2, and both ends of the belt 73 are fixed to a metal fitting 76 attached to a fixed object 72 by a bolt 75. Reference numeral 77 denotes a cover. The conventional device 3 is fixed in the horizontal direction by a belt 73, but is fixed in the vertical direction by friction caused by the tightening force of the belt 73 and fitting of the groove 74 with the belt.

FIG. 9 shows a tank fixing structure described in JP-A-2000-64351. Hereinafter, it is referred to as a conventional device 4. The conventional device 4 is provided with a directional support portion 81 and a fixed support portion 82 on the surface of a revolving frame 51, and a resin tank 80 is placed on the revolving frame 51 in contact with the directional support portion 81, and a fixed belt 83 is mounted. Is fixed by tightening it up and down diagonally. Screw portions 83 a are provided at both ends of the fixed belt 83, and the fixed belt 83 is fastened to the fixed support portions 82 by nuts screwed to the screw portions 83. The resin tank 80 is provided with a groove 85 for fitting with the fixing belt 83, and a rubber band 83b for preventing slippage is attached to the back surface of the fixing belt 83. The conventional device 4 is fixed in the vertical and oblique directions by a fixing belt 83, and the rotational movement in a direction orthogonal to the fixing belt 83 is fixed by frictional force.

[0007]

SUMMARY OF THE INVENTION The above-mentioned conventional apparatuses 1 to 1
In the conventional device 4, the tank is fastened and fixed with a belt. The belt can be fixed almost completely in the tightening direction, but it is fixed by friction in the other direction, so if the belt becomes old and stretches, it can be moved slightly in this direction. Become. Therefore, there is a problem that the resin tank is easily vibrated by the vibration of the revolving structure, generating noise and causing scratches. In addition, it is necessary to tighten the belt while adjusting the tightening force using a wrench or the like, so that there is a problem that it is difficult to use an automatic tool, and it takes time to perform an assembling operation. The present invention has been made in view of the above-described circumstances, and has been made in order to provide a device that has solved the problems of the conventional device. That is, an object of the present invention is to provide a resin tank fixing structure in which fixing is completely performed, generation of noise and scratches can be suppressed, and an assembling operation can be performed efficiently.

[0008]

The present invention adopts the following constitution as means for solving the above-mentioned problems. That is, in the invention according to claim 1, a flange portion is provided on a resin tank, a fixed support portion is provided on a revolving body frame of a construction machine or the like, and the flange portion and the fixed support portion are bolted to each other. It is characterized by fixing the resin tank.

The invention described in claim 2 is the first invention.
In the invention described in (1), the flange portion is provided in a state where a plate-like portion of the flange portion is provided upright on a flat portion of the resin tank.

According to a third aspect of the present invention, in the second aspect of the invention, the flange portion is formed integrally with a resin tank by providing reinforcing portions on both sides of the plate-like portion. And According to a fourth aspect of the present invention, in the third aspect of the invention, the flange portion connects one or both sides of the plate-like portion to the wall portion of the resin tank instead of the reinforcing portion. It is characterized by being integrally formed.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the bolt fastening includes inserting a cushion material between the flange portion and the fixed support portion. It is characterized by having done. Further, the invention according to claim 6 is characterized in that, in the invention according to any one of claims 1 to 4, both the bolt fastening and the fastening with a belt are used together.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a front view (not necessarily coincident with the front of a construction machine) of an embodiment in which the present invention is implemented. FIG. 2 is a left side view of FIG. 1, and FIG. 3 is an upper plan view. FIG. 4 is an exploded view illustrating details of the fixing portion. FIG. 5 shows an embodiment in which a part is changed.

This embodiment shows a case where the resin tank 20 is fixed at three places. In addition, resin tank 2
A frame 12 for fixing 0 is provided. Figure 1
In FIG. 3, a fixing frame 12 is erected on a revolving structure frame floor 11 by bolts or welding. As shown in FIG. 2, the fixing frame 12 has an inverted U-shape on the left side, and includes a base frame 12a and an arm 12b (FIGS. 1 and 3).
) And the tip 12c. Arm 12b
Is fixed to the base frame 12a in the form of a transverse beam, and the tip 12c is fixed to the arm 12b. In addition, the arm part 12b is comprised by the L-shaped angle.

The fixed support portions 14 to 16 are made of a resin tank 20.
It is provided at a position where it can be fixed efficiently in consideration of the disposition location and shape. The first fixed support portion 14 is the base frame 1
2a is fixed by bolts or welding. The second fixed support portion 15 is fixed to the distal end portion 12c with a bolt or the like.
Further, the third fixed support portion 16 is fixed to a pedestal 17 provided on the revolving structure frame floor. The first to third fixed support portions 14 to 16 are formed by L-shaped angles made of steel or a hard material.

The resin tank 20 is a tank for storing hydraulic oil or liquid fuel, and is formed in a complicated shape due to restrictions on the installation location and the like. The inlet 21 is provided at the head of the resin tank 20, and the outlet 22 is provided at an appropriate position on the side surface (see FIG. 2). The resin tank 20 is provided with flange portions 24 to 26 at positions suitable for fixing, and the fixed support portions 14 to 16 are provided at positions where these flange portions can be bolted to these flange portions. As shown in FIGS. 1 to 3, the flange portion 24 is provided on a flat surface on the side surface of the tank 20, and the flange portion 25 is provided on a flat surface on the upper surface. Further, the flange portion 26 is provided on a flat surface at a lower front portion of the tank 20. In addition, in this embodiment, although all the flange parts are provided on the flat surface, it may be a slightly concave or convex surface, or may be a surface having a wall part formed on one or both sides. good.

The flange portions 24-26 are configured as shown in FIG. That is, plate-like portions 32 of the flange portions 24 to 26 are provided vertically on a flat portion 31 of the surface of the tank 20, reinforcing portions 33, 33 are provided on both sides of the plate-like portion 32, and A fixing hole 34 is provided at the center. These flange portions 24 to 26 are desirably formed integrally with the resin tank 20. This allows
This is because production becomes easy and sufficient strength can be maintained. In addition, instead of providing the reinforcing portion, it may be connected to a wall formed on the tank surface.

FIG. 4 shows a method of fastening bolts between the flange portions 24-26 and the fixed support portions 14-16. In FIG. 4, the fixed support portion 35 is formed by an L-shaped angle, has a fixing hole provided on an upright surface, and has a mounting surface fixed to the fixing frame 36 by bolts or welding. Elastic bodies 37 and 38 are inserted between the plate-like portion 32 of the flange portion and the fixed support portion 35 and between the flange portion 32 and the washer 39, respectively. The elastic members 37 and 38 serve as cushions and are mainly intended to prevent the breakage of the flange portion 32, and are made of rubber or soft plastic. In some cases, a spring may be used. As shown in FIG. 4, the bolts are fastened by tightening bolts 40 and nuts 41 by arranging a cushion material 37 and a fixed support portion 35 on one side of the plate-shaped portion 32 and a cushion material 38 and a washer 39 on the other side in this order. Is done.

FIG. 5 shows another embodiment, in which the bolt fastening and the belt fixing system are used together. Instead of providing the flange portion 26 of FIG. 1, the groove 43 is formed in the resin tank, and the resin tank 20 is fixed to the revolving frame floor with a fixing belt (not shown). In the case of fixing using both types as in this case, not only the number of bolts can be reduced, but also it can be fixed more firmly. Therefore,
Suitable for fixing to places where vibration is severe.

As described above, in the present embodiment, the resin tank 20 is provided with a plurality of flange portions (24 to 26), and the flange portions are fixedly mounted on the revolving frame 11 (14 to 16). ), The resin tank 20 is fixed in all directions, and can be completely fixed. In addition, since a cushion material is inserted for bolt fastening, not only can the resin tank 20 be prevented from being damaged, but also high-frequency noise can be prevented. Therefore, even when the resin tank 20 is arranged close to other structures, there is no need to provide a cushioning material between them, and there is an effect that the space can be widely used. In addition, the bolt can be easily fastened using an automatic tool, so that there is an effect that the number of manual operations is reduced and the assembling operation is facilitated.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the technical scope of the present invention is not limited to this. For example, the position and number of bolts are shown in the above embodiment. However, the present invention is not limited to this.

According to the present invention, a plurality of flange portions are provided on a resin tank, and the flange portions are fixed to fixed support portions fixed to the revolving frame by bolts, so that the resin tank is fixed in all directions. Thus, an effect that complete fixation can be obtained is obtained. Even when the resin tank 20 is arranged close to other structures, there is no need to provide a cushioning material between them, so that there is an effect that the space can be widely used. In addition, the bolt can be easily fastened using an automatic tool, so that an effect that the assembling work is facilitated can be obtained.

[Brief description of the drawings]

FIG. 1 shows a front view of an embodiment of the present invention.

FIG. 2 shows a left side view of an embodiment of the present invention.

FIG. 3 shows a top plan view of an embodiment of the present invention.

FIG. 4 shows an exploded view of a bolt fastening portion.

FIG. 5 shows another embodiment.

6A is a plan view of a fixing method of the conventional device 1, and FIG.
(B) shows a front view.

FIG. 7 shows a fixing method of the conventional device 2.

FIG. 8 shows a fixing method of the conventional device 3.

FIG. 9 shows a method of fixing the conventional device 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Revolving body frame 12 Fixing frame 14-16 Fixed support part 20 Resin tank 24-26 Flange part 31 Flat part 32 Plate-shaped part (fixed support part) 33 Reinforcement part (fixed support part) 35 Fixed support part 36 For fixing Frame 37, 38 Elastic body (cushion material)

Claims (6)

[Claims] In a structure for fixing a resin tank mounted on a vehicle such as a construction machine, a flange portion is provided on the resin tank, and a fixed support portion is provided on a revolving body frame of the construction machine or the like, and the flange portion is fixed to the fixed portion. A tank fixing structure, wherein the resin tank is fixed by bolting the supporting part to the tank. 2. The tank fixing structure according to claim 1, wherein the flange portion is provided in a state where a plate-like portion of the flange portion is provided upright on a flat portion of the resin tank. 3. The tank fixing structure according to claim 2, wherein the flange portion is formed integrally with a resin tank by providing reinforcing portions on both sides of the plate portion. 4. The flange portion is formed integrally with one or both sides of the plate-like portion by connecting to one side or both sides of a resin tank in place of the reinforcing portion. The tank fixing structure according to 1. 5. The tank fixing structure according to claim 1, wherein said bolt fastening includes inserting a cushion material between said flange portion and said fixed support portion. 6. The tank fixing structure according to claim 1, wherein the tank fixing structure uses both the bolt fastening and the belt fastening.